Ingot-stripper.



H. AIKEN. INGOT STRIPPER.

APPLICATION FILED SEPT. 18, 1905.

Patented Dec. 8, 1908.

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H. AIKEN. INGOT smrrm.

APPLIOATION FILED ST'EPT. 18, 1905. 'Patented Dec.

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IN GOT STRIPPER.

APPLICATION FILED SEPT. 18, 1905.

Patented Dec. 8,1908.

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H. AIKEN. IN GOT STRIPPER.

QPPL IQATION FILED SEPT. 18, 1905. 905 ,'827.- I PatentedDec. 8,1908.

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WITH ESSES Patented 1m 8, .1908.

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HENRY AIKEN, OF PITTSBURG, PENNSYLVANIA.

INGOT-STRIPPER.

I No. 905,827.

Specification of Letters Patent.

Patented Dec. 8, 1908.

Application filed September 18, 1905. Serial No. 278,875.

To all whom it may concern:

Be it known that I, HENRY AIKEN, of Pittsburg, Allegheny county, Pennsylvania, have invented a new and useful Ingot- Stripper, of which the following is a full, clear, and exact description, .reference being had to the accom anying drawings, forming part of this speci 'cation, in which *Figure 1 is a plan view' of the trolley; Fig. 2 is a side elevation showing the relative posi tion of the stripper, mold and car when the device is about to strip the mold from the ingot; Fig. 3 is an end elevation partly in section showing in full lines the mold lifted from the ingot; Fig. 4 is a view similar to Fig. 3 showing the parts in vertical section; Fig. 5 is an end elevation corresponding to Fig. 2 Fig. 6 is a plan view showing the pressure pump; Fig. 7 is a vertical section on the line VIP-VII of Fig. 6 Fig. 8 is a vertical cross-section on the line VIIIVIII of Fig. 6; Fig. 9 is a vertical section on the line IXIX of Fig. 7; Fig. 10 is a front elevation of Fig. 7 viewed in the direction of the arrow; Figs. 11 to 14, inclusive, are detail sectional views taken through Fig. 5 at different horizontal planes u on the lines XIXI, XIIXII, XII XIII, and XIV-XIV, respectively.

In the drawing, 2 represents the extracting cylinder preferably open at its lower end, and provided at its upper end with a telescopic connection 3 on a vertical water supply pipe 4 which derives its supply of water from pump mechanism situated on the trolley 5. The trolley is mounted on the bridge 6 of a crane and is traversed back and forth along the same by a trolley-motor 7. The plunger P projects from the lower end of the cylinder and is supported by ropes of flexible connections 8 attached to drums 9, which are provided with counterweighted ropes 9 adapted to balance in part the weight of the cylinder and plunger and preferably fitted with springs 10 which take up the jar occasioned by sudden starting or stopping. The shaft of the drums 9 is connected with an electric hoisting motor 11 by gearing 12. 13 is a ram or post connected with the plunger P and having at its lower end a head 14 above which is a loosely fitted cross-head 15 connected by links 16 with crank arms 17 Which project from the shafts 18 of tongjaws 19. These shafts are pivotally mounted at the ends of rods or supports 20 which destands on a car 23, the drums 9 are rotated a reversely so as to unwind the ropes 8 and to lower the cylinder with the plunger until the head of the post 13 rests on top of the ingot. While the cylinder and plunger are being lowered, the head of the plunger is in engagement with the lower end of the cylinder, and the cross-head 15 is in engagement with the cross-head 21 and also with the head 14. While the cross-heads 15 and 21 are in con tact with each other, the jaws 19 are held in their open position. The pumpis now started and water is pumped into the cylinder, thereby forcing the post or stop 18 down upon the ingot, and raising the cylinder 2 with the rods 20, without lifting the plunger. This raises the shafts 18, and through the cranks 17 and links 16, acting in the nature of toggles under the weight of the cross-head 15 and of the tongs, presses the jaws 19 inwardly and causes them to engage the sides of the mold below the lugs 22, (Fig. 5). By continuing to ump water into the cylinder, the mold is li ted with the cylinder and is loosened from the ingot, the latter bein held by the post or stop. When the mold has been thus loosened and has been raised far enough from the car, the exhaust valve from the pi e 4 is opened and the motor 11 is started. he drums 9 are thereby rotated, and by means of the ropes 8 the plunger is raised until the mold is clear of the ingot. The exhaust from the pipe 4 is now closed, and the trolley moved over another track. The exhaust is then opened and the motor is operated until the molds rest upon the car which is to receive them. The motion of the drum is now reversed, thus pulling upwardly on the head 14 and moving the crosshead 15 into engagement with the crosshead 21, the weight of the mold being no longer on the jaws. This movement, by lifting on the cranks 17, rocks the shafts 18 and swings the jaws clear of the mold. The trolley is then moved over another ingot, and the operation is repeated.

The pump mechanism which I prefer to employ is shown in Figs. 6-10. It comprises three cylinders 24 operatedby plungers 25 from a crank-shaft 26 and arranged to pump water from a reservoir 27 into an the same moving structure.

outlet 28 which leads to the ipe 4, valves 29,, 30 being provided to contro the communica:.

tion between the cylinders and the reservoir and outlet. 31 is the exhaust-valve above referred to.

It is operated by a hand-lever 32, and when.

opened permits the displacement of water from the cylinder 2 through a return-port 33 into the reservoir 27.

Within the scope of my invention as dc fined in the claims, the parts may be modified in many ways by those skilled in the art. Thus, the cylinder and plunger may be reversed in position, the plunger being placed above and the cylinder below, in which case the plunger would perform the vertical motions of the cylinder; and many other changes may be made.

The advantages of the device reside in its great sim licity, efficiency and economy of power. believe it is the first ingot stripper in which a cylinder is used for freeing the mold from the ingot by lifting the mold, and

the mold is then raised clear of the ingot by an auxiliary (preferably electrically driven) hoisting device the whole being carried by This affords all the advantages which arise from the strength and positiveness of action of. a hydraulic cylinder in dislodgin' theingot with the rapid and easily contro lled action of an electric motor during the subsequent easier operation of lifting the mold clear of the ingot, and enables the device to operate with a minimum of hydraulic power.

I claim:

1. 'An ingot stripper having a movable structure, a cylinder and plunger carried. thereby, and a pump for supplying said cylinder and carried by the movable structure; substantially as described.

2. An ingot stripper having a movable structure, a cylinder and plunger suspended therefrom, a motor for raising the plunger,

and a pump for supplying the cylinder, the

crane carriage, a cylinder and plunger suspended therefrom, a pump for supplying the cylinder, and an auxiliary electric motor for raising the plunger, said motor and pump being mounted on the carriage; substantially as described.

6. -An ingot stripper having a movable crane-carriage,a cylinder and plunger suspended from the carriage, a pump for supplying the cylinder and also mounted on the carriage, an auxiliary'motor also on the carriage and arranged to raise and lower the cylinder and plunger, supports connected to the cylinder, jaws mounted on said supports, and a post or ram connected to the plunger and arranged to operate the jaws; substantially as described.

7. An ingotstripper having a movable carriage, a cylinder and plunger carried thereby, a counter-balanced lifting device therefor, an auxiliary lifting motor, and a pump for supplying the cylinder carried by the carriage; substantially as described. a

8. An ingot stripper having a cylinder and plunger suspended therefrom and arranged to be operated'to force the mold from the ingot, a pump for supplying the cylinder and movable translationallytherewith, and an auxiliary motor for actuating said plunger to raise the same; substantially as described.

9. An ingot stripper having a horizontally movable crane-carriage, a cylinder and plunger suspended from the carriage, a motor for raising and lowering the cylinder and plunger, mold stripping devices carried by the cylinder and p unger and a pump for supplying the cylinder, said pump being mounted on the carriage and movable therewith; substantially as described.

10. An ingot stripper having a movable trolley or carriage, a cylinder and plunger carried by the carriage, stripping mechanism operated by the cylinder and plunger, and a pump for supplying the cylinder mounted on the carriage and movable therewith; substantially as described.

In testimony whereof, I have hereunto set my hand.

HENRY AIKEN.

Witnesses:

JOHN MILLER, H. M. CoRWrN. 

